In HC20 Hydraulic Rock Drill (or Hydraulic Drifter) systems, the Front cover 86676863 is the “front-line protective barrier”—it’s installed at the drill’s front end to shield core components (like the piston and shank) from mining debris, while sealing hydraulic interfaces to avoid oil waste.

1. Durability: Heat-treated alloy steel (tensile strength ≥ 650 MPa) resists cracks for long-term use.
2. Sealing precision: Seal grooves are machined to ±0.002mm tolerance, ensuring tight fit with seals—no leaks.
3. Debris resistance: Reinforced edge design blocks large rock chips, protecting internal parts.